<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>徐骏鹏</title>
</head>
<body>
    <br>
    <h4>(`======= 第7题 =======`)</h4>
    <div>
        <input type="checkbox" name="aa" value="0" />0
        <input type="checkbox" name=" aa " value="1" />1
        <input type="checkbox" name=" aa" value="2" />2
        <input type="checkbox" name=" aa " value="3" />3
        <input type="button" onclick="abc()" value="提 交" />
        <div id="allselect">      
        </div>
    </br>
    <br>
    <h4>(`======= 第8题 =======`)</h4>
    <div>
        <form name="a">
            <select name="a" size="1" onchange="_sel(this)">
            <option value="a">1</option>
            <option value="b">2</option>
            <option value="c">3</option>
            </select>
        </form>
    </div>
    </br>
    <br>
    <br>
    <h4>(`======= 第9题 =======`)</h4>
        <div>
            用户名：<input type="text" id="username"/><br/>
            密  码：<input type="password" id="password"/><br/>
        　　 确认密码：<input type="password" id="password1"/><br/>
            <button id="btnSubmit" type="button">提交</button><br/>
        </div>
    </br>
    <br>
    <h4>(`======= 第10题 =======`)</h4>
    <table>
        <tr>
            <td>留言</td>
            <td id="number"> 0 </td>
        </tr>
        <tr>
            <td colspan=2>
                <textarea id="feedBack" onkeyup="test()" rows=6></textarea>
            </td>
        </tr>
    </table>
    
        <script src="./jquery-3.6.0.js"></script>
    <script type="text/javascript" src="./base.js"></script>
</body>
</html>